Who said? All objects attract each other with a force that is directly proportional to the product of their masses and inversely proportional to their distance.
Newton
How is called the law that says... All objects attract each other with a force that is directly proportional to the product of their masses and inversely proportional to their distance.
Law of universal gravitation
Which class lever is it?
Class 2
What are gears?
Several cogs connected
What type of complex machine are the break handles?
Break handles (levers)
What is the name of the Archimede´s machine used to raise water?
The screw of Archimedes
Which class lever is it?
Class 1
____________ can help us lift objects more easily by changing the direction of the force
Pulley
What type of complex machine is this object?
Pedal (crank)
_____________ lets us move objects using less force without changing the direction
Inclined plane
What is it?
Wedge
Which class of lever is it?
Class 1
What type of complex machine is this object?
Corkscrew (rack and cog)
Why did Archimedes designe the claw?
To defend his native city, Syracuse from Roman attack
How is a screw designed?
It is an inclined plane wrapped around a cylinder
How do cogs and chains work together?
When we turn on cog it transmits movement to the other cog thanks to the chain. Both same direction
How did the law of universal gravitation start?
With an apple
What is the name of the Archimede´s machine used to sink boats?
The claw of Archimedes
How does rack and cog work together?
When the cog turns, the rack moves in a straight line.
What is it?
Pulley
What is it?
Inclined plane
_____________ have a rigid bar that moves on a pivot. It transmits a force which makes easier to lift a load
Lever
Which class lever is it?
Class 2
Which class lever is it?
Class 3
It is an inclined plane wrapped around a cylinder
Screw
It is a bent lever that transmits its movement to an axel
Crank
Which class lever is it?
Class 1
Which class lever is it?
Class 3
It is two inclined planes join
Wedge
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